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Metal fences shall be designed and installed according to the manufacturer's spe- <br />cifications. <br />Metal fences shall be at least 3 feet high and must be highly visible. <br />Fences shall not be wired or stapled to trees. <br />Maintenance Standards <br />If the fence has been damaged or visibility reduced, it shall be repaired or replaced <br />immediately and visibility restored. <br />BMP C105: Stabilized Construction Entrance / Exit <br />Purpose <br />Stabilized Construction entrances are established to reduce the amount of sediment <br />transported onto paved roads by vehicles or equipment. This is done by constructing a <br />stabilized pad of quarry spalls at entrances and exits for construction sites. <br />Conditions of Use <br />Construction entrances shall be stabilized wherever traffic will be entering or leaving a <br />construction site if paved roads or other paved areas are within 1,000 feet of the site. <br />For residential construction provide stabilized construction entrances for each residence, <br />rather than only at the main subdivision entrance. Stabilized surfaces shall be of suf- <br />ficient length/width to provide vehicle access/parking, based on lot size/configuration. <br />On large commercial, highway, and road projects, the designer should include enough <br />extra materials in the contract to allow for additional stabilized entrances not shown in <br />the initial Construction SWPPP. It is difficult to determine exactly where access to these <br />projects will take place; additional materials will enable the contractor to install them <br />where needed. <br />Design and Installation Specifications <br />See Figure II-4.1.1 Stabilized Construction Entrance (p.273) for details. Note: the 100' <br />minimum length of the entrance shall be reduced to the maximum practicable size when <br />the size or configuration of the site does not allow the full length (100'). <br />Construct stabilized construction entrances with a 12-inch thick pad of 4-inch to 8-inch <br />quarry spalls, a 4-inch course of asphalt treated base (ATB), or use existing pavement. <br />Do not use crushed concrete, cement, or calcium chloride for construction entrance sta- <br />bilization because these products raise pH levels in stormwater and concrete discharge <br />to surface waters of the State is prohibited. <br />2014 Stormwater Management Manual for Westem Washington <br />Volume H - Chapter 4 - Page 270 <br />